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    <script>
      var a = 2;
      var b = 3.5;
      var result = --a + ((100 * b++) % 6) / 50 - a * a++ + b--;
      //a=1
      //b=3.5
      console.log(result);
      var e = b++;
      var d = e-- - --e;
      var msg = result * e + (e++ / d) * ++b - d;
      console.log(a, b, e, d, result, msg); //2 5.5 2.5 2 4.54 8.935
    </script>
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